Prefill the company logo field

 
    add_filter('submit_job_form_fields', 'dm_prefill_company_logo'); // for users not logged in
    add_filter('submit_job_form_fields_get_user_data', 'dm_prefill_company_logo'); // for logged in users
    function dm_prefill_company_logo( $fields ) {
      $fields['company']['company_logo']['value'] = 'full_url_to_the_logo';
      return $fields;
    }